Demountable rim.



' uw. DRUMMOND.

DEMOUNTABLE mm. APPLICIVHIN` FILED DEC. 22, 1915.

Puentod Apr. l0, i912'.

f NORA/EVS FREE.

DEMOUN TABLE RIM.

.Patented Apr. il), 191i?.

lgggijmg.l Specification of Letters Patent.

- Application filed December 22, 1915. Serial No. 68,137. To all 'fri/om t may concern.' f

le it known that l. Josnrn lV. DRUM-` MoNo. acitizen of the llnited States. and a resident ot' Chillicothe, in the county of Ross and State of Ohio. have invented a certain new and useful Improvement in Demonntable Rims, of which the following is a specifi ation.

M v present invention relates generally 'to dcmoui'ltable rims. and more particularly to demountable rims` ot' that nature includ-- ing hinged sections, my primary objectl being to provide a rim which may be readily associated with, and disassociated from, a tire, emhodying'hinge Sections. the free ends, of which are so formed as to lock and unlock substantially in an automatic manner, and to defeat all danger of accidental displacement when` tire inflated. pressure is applied thereto.

A further object of my present inventionv is to provide. 'For use in connection with lthe rim as above. means at thc separable joint between the sections for maintaining the latter against displacement should the tire become deflated, and to ohviate all danger ot relative movement of the sections either laterally oa 'ay from one another.

ln the accompanying drawing illustrating my invention. and which forms a part of this specification:

Figure 1 is i' side elevation showing my improved rim complete.

Fig. 2 is a longitudinal section through the separable joint between the hinge sec-4 tions enlarged. taken substantially on line 2-2 of Fig. 3.

Fig. is a `t'ace view looking at the inner' periphery of that portion of the rim shown in Fig. Q.

Fig. L is a detail perspectiveview of the separable ends of the sections together with the interlocking tongues. the? several parts being in detached relation. j

Reterring now to these figures. the rim to which my present improvements are applied. consists of two sections A and B. the section .A being of greater length than the sectionV B. and the said sections being conneeted together at a certain point by a hinge (l. leaving their tree ends relatively adjustable. to provide l'or ready association with and disassociation from a tire in Corr nection with which the rim is to be. utilized7 the hinge C being preferably. located at such a point that the opening of section A for the reception ot' the valve tube D of a tire will be diametrioall)7 opposite the center of the section B, providing tor manipulation of the latter withtliut danger ot contact with the said valve tube. This relative disposition of the parts. which l prefer., is well illustrated in Fig. l, although it is to he appreciated that it may in some instances be varied where other conditions, more iniportantthan those stated. are to loe observed.

As clearly seen in the several iigures, the meeting free ends of the sections A and B are beveled as at A and B in order that the free end of section B may freely swing` inwardly when disengaged. it being further noted, as best seen in Figs. l, 2, and 4. however, that these free ends of 'the sections are provided with relatively engaging shouldered portions forming a substantial lock when tire inflated pressure is applied to the rim.

To this end the free end ot section A has an 'undercut shoulder A2 adjacent its inner periphery. torni'ing a recess for the reception of the shoulder B2 at the free end of secytion B. the structure thus described being such as to provide the meeting ends of the sections A and B with substantially V- shaped interlocking portions constituting part of their beveled meeting ends wherebyvv tire inflated pressure upon the rim effectively holds the shouldered portions in engagement and prevents relative movement of the section B with respect to the section A. To engage the sections in practice. an uninl'lated tire is placed around the rim with the section l disengaged and in the position shown in dotted lines4 in Fig. l. and when so placed section B is kicked outwardly to proper position. the tire being uninflated. permitting the necessary stght exhansive movement of the entire rim to engage the sections as shown in Fig. 2.

lll'hen removing the tire trom the rim. the former is'd'ellated and the [freeend ot section is kicked outwardly. the beveled faces ot the shoulderwl ends riding upon one another and freeing the section l for inward swinging movement.

My invention also contemplates the utilization of means whereby to prevent all danger of lateral shitting of the locked ends ot the sections A and B and all tendency of the same to pull apart in use. vand to this end contemplates thev provision of a pair .of

interlocking tongues E and F consisting of plates riveted to the inner peripheral faces oi the said sections. i

These tongues E and F areI provided with oppositely presented spaced hoole extremities E and F which come into engagement in the position best. seen in Fig. 2.i when the sections A and li ot' the rim are in operative positions, thus defeatifng any.tendency of the sections to pull away from one` anbther iu use. rl"he tongue E furthermore has a shoulder E2 extending between its hook eX- tremities E and the tongue F is provided with a spring catch member F2, extending between its hook extremities F and adapted tor engagement behind the shoulder E? vas seen in Fig. `27 when the hook extremities E and F are engagedy to the extent shown.

Thus it will be seen that through the use of the tonguesll and'F in connection with the paitieular joint at the meeting ends of the sections A and B, a substantially rigid connection is formed which prevents theinterlocked ends of the sections A and B from pulling away from one another and from lateral displacement. W'hen the tongues E and F are utilized in connection with the joint, it is of course necessary to unlock or raise the spring catch F2 by the application of a screwdriver or like implement, before the section B can be released from the section A.

l. A rim formed ot' hinged sections having beveled meeting tree ends provided with V-shaped interlocking portions constituting part of said beveled meeting ends and automatic clamping means, including members carried by said rim ends and relatively engageable when said interlocking rim portions are engaged,' and a spring latch for locking said members in engaged position.

2. A rim formed ot' hinged sections having beveled free ends provided with relatively engaging shouldered portions, and automatic clamping means forpreventing lrelative movement of said free ends in 'any direction and maintaining said shouldered portions in engaged relation, said clamping means consisting' of oppositely bent hook members mounted upon theinner peripheries ot' the said rim sections adjacent the said beveled free ends and being movable to operative position when said shouldered p0rtions are engaged. Y

, 3. A rim formed of hinged sections having their tree ends beveled and provided with relatively engaging shouldered p0rtions, automatically interlocking hooks carried by said sections adjacent their t'ree ends whereby to prevent the sections from pulling apart and a spring latch for automatically securing said hooksv in engaged position.

4. A vehicle wheel rim comprising sections ,having hinged connections with one another and having beveled free meeting eX- tremities, tongues adjacent to the tree eX- tremities ot' the rim sections having interlocking oppositely bent hooks and a latch member for automatically locking said hooks against displacement carried by one. of said tongues.

5. A vehicle wheel rim comprising sections having a hinged connection with each other and having beveled tree meeting extremities, tongues adjacent to the free extremities of the rim sections having interlocking hooks, and a spring catch on one of said tongues adapted to engage the other tongue for the lpurpose of retaining the hooks of the tongues in interlocked relation.

G. A vehicle wheel rim comprising sections-having a hinged connection with each other and having beveled free meeting extremities, tongues adjacent to the free extremities ot-thc rim sections having interlocking hooks, and a spring catch on oney of said tongues adapted to engage the other tongue for the purpose of retaining the hooks of the tongues in interlocked relation, said spring ycatch also serving to prevent relative lateral movement of the free extremities of the rim sections.

JOSEPH W. DRUMMOND. 

